- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/357 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
Patent holdings for IPC class A61K 31/357
Total number of patents in this class: 1857
10-year publication summary
|
123
|
124
|
114
|
154
|
142
|
128
|
119
|
120
|
108
|
110
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eisai R&D Management Co., Ltd. | 1208 |
42 |
| The Regents of the University of California | 20245 |
37 |
| The Johns Hopkins University | 5746 |
23 |
| Tasly Pharmaceutical Group Co., Ltd. | 120 |
23 |
| Janssen Pharmaceutica N.V. | 3351 |
19 |
| The Brigham and Women's Hospital, Inc. | 2219 |
17 |
| Tapestry Pharmaceuticals, Inc. | 25 |
17 |
| Massachusetts Institute of Technology | 10124 |
14 |
| President and Fellows of Harvard College | 6028 |
13 |
| Cedars-Sinai Medical Center | 1173 |
12 |
| Infirst Healthcare Limited | 60 |
12 |
| Korea Research Institute of Bioscience and Biotechnology | 1059 |
12 |
| Pfizer Inc. | 3403 |
11 |
| Board of Regents of the University of Nebraska | 776 |
11 |
| Novartis AG | 10635 |
10 |
| Bio-Pharm Solutions Co., Ltd. | 60 |
10 |
| Nutramax Laboratories, Inc. | 250 |
10 |
| Symrise AG | 1755 |
10 |
| Vivakor, Inc | 125 |
10 |
| Cheers Health, Inc. | 23 |
10 |
| Other owners | 1534 |